../ dmsp_15_ephemeris_20190617.txt 22-Jun-2023 00:41 109561 dmsp_16_ephemeris_20190617.txt 22-Jun-2023 00:41 109571 dmsp_17_ephemeris_20190617.txt 22-Jun-2023 00:41 109651 dmsp_18_ephemeris_20190617.txt 22-Jun-2023 00:41 109626